MONOGEAPH OF THE EXISTING CEINOIDS. 29 



Comatula as he restricted it, a character which we now know to be of very uncertain 



value. 



In the " Inconographic du Regne Animal" published by Gu6rm-Men6villc 

 during the years from 1828 to 1837 there are two figures supposed to represent the 

 species described as Comatula carinata from Mauritius; possibly the first (2) does 

 represent this species, though it looks more like some species of Antedon; but the 

 second (2a) appears to be a species of AmpUmetra, and agrees fairly well with A. 

 discoidea from northern Australia and the East Indies. There is a specimen of 

 AmpUmetra discoidea (labeled by P. H. Carpenter Antedon milberti var. dibra- 

 chiata) m the Paris Museum from which I suspect this figure was drawn. 



In the course of his studies on the echinoderms Prof. Johannes Muller had 

 become interested in the comatulids, and in 1841 he published a paper upon the 

 group in which he described the new genus Actinometra. The type of his new 

 genus was the new species Actinometra imperialis, founded upon a magnificent speci- 

 men two feet in expanse which he had found in the Vienna Museum labeled "Coma- 

 tula Solaris." In addition to Actinometra imperialis Muller described as new the 

 follo\ving species, all of which he referred to Leach's genus Alecto: 



Alecto milleri (new name for Comatula Jhnbriala Miller, not 



Comatula fimhriala Lamarck ) Antedon bifida. 



Alecto phalangium. Leplomctra phalangium. 



Alecto eschrUhtii Heliomelra glaeialis. 



Alecto eckinoptcra Comactinia echinoptera. 



Alecto rosea Comatula brachiolata. 



Alecto tcssellata Amphimetra tessellata. 



Alecto polyarthra (Not identifiable.) 



Alecto multifida (see below) Comasler niiiltifidn. 



Alecto savignii Hctcrometra savignii. 



\Lam.promctTa palmata. 

 Alecto palmata {Lamprometra protectus. 



Alecto parvicirra Comanthus parvicirra. 



Alecto limoremis Comanthus parvicirra. 



Alecto japonica Comantlms japonica. 



Alecto flagellata Dichromclra flagellata. 



Alecto novx-guinese Comaster nova:guinex. 



Alecto elongata Dichrometra flagellata. 



Alecto bennetti Comanthus bennetti. 



Miiller found in the literature three species which bore the name multiradiata, 

 m addition to the so-called "multiradiatas" of Leuckart, Audoum, and Schweigger, 

 which he seems to have correctly considered wrongly so called; one of these had 

 been described by Linne (Asterias multiradiata) and later redescribed by Retzius, 

 another had been described by Lamarck (Comatula multiradiata), while a third had 

 been described and beautifully figured by Goldfuss (Comatula multiradiata). Both 

 Lamarck and Goldfuss had been under the impres.sion that the species they had in 

 hand was the one originally diagnosed by Linne. Muller took the ground that the 

 name should hold for the species or form which was best described, and ho treated 

 the Asterias multiradiata of Linne and the Comatula multiradiata of Lamarck as 

 being quite unrecognizable from the published descriptions, and therefore not ten- 

 able. The Comatula multiradiata of Goldfuss, well described and illustrated with 



